Influence of Au capping layer on the magnetic properties of ultrathin epitaxial Fe{sub 3}O{sub 4}/GaAs(001) film

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3556956· OSTI ID:21560122

Liu, E; Zhang, J Z ^[1]; Zhang, W; Wu, J; Xu, Y B ^[2]; Wong, P K. J. ^[2]; Lv, L Y; Zhai, H R ^[3]; Zhai, Y ^[1]

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1. Department of Physics, Southeast University, Nanjing 211189 (China)
2. Departments of Electronics and Physics, University of York, York YO10 5DD (United Kingdom)
3. National Laboratory of Solid Microstructures, Nanjing University, Nanjing 210093 (China)

The effect of the Au capping layer on the magnetic anisotropies and molecular magnetic moment of ultrathin epitaxial Fe{sub 3}O{sub 4} films on GaAs(100) substrate was studied by MO Kerr effect, superconducting quantum interference device, and Ferromagnetic resonance, respectively. The films with and without capping layers show a predominant in-plane uniaxial magnetic anisotropy and a minor fourfold anisotropy. The Au capping layer was found to increase significantly the uniaxial magnetic anisotropy related to the magnetoelastic interactions at the Au/Fe{sub 3}O{sub 4} interface, and unexpectedly reduce saturation molecular magnetization due to the interfacial diffusion between Au layer and Fe{sub 3}O{sub 4} layer.

• OSTI ID: 21560122
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: DOI: 10.1063/1.3556956; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ANISOTROPY
DIFFUSION
FERRITES
FERROMAGNETIC RESONANCE
FILMS
GALLIUM ARSENIDES
GOLD
INTERACTIONS
INTERFACES
IRON OXIDES
KERR EFFECT
LAYERS
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETO-OPTICAL EFFECTS
MOLECULAR BEAM EPITAXY
SQUID DEVICES
SUBSTRATES
THIN FILMS
ARSENIC COMPOUNDS
ARSENIDES
CHALCOGENIDES
CRYSTAL GROWTH METHODS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
EPITAXY
EQUIPMENT
FERRIMAGNETIC MATERIALS
FLUXMETERS
GALLIUM COMPOUNDS
IRON COMPOUNDS
MAGNETIC MATERIALS
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RESONANCE
SUPERCONDUCTING DEVICES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS